question_answer

A particle tied to a string of negligible weight and length l, is swinging in a horizontal circular path with constant angular velocity having time period T. If the string length is shortened by \[\frac{l}{2}\], while the particle is in motion, the period is:

A)  4 T                                        

B)  2 T

C)  T                                                            

D)  \[\frac{T}{4}\]